if __name__=='__main__':
    print('程序自身在运行')
else:
    print("I am mymoudloe.py,let's dance!")
def fib(n):#循环写斐波那契数列
    a,b = 0,1
    while b<n:
        print(b,end='')
        a,b=b,a+b
    print()

def fib2(n):#递归写菲波那切数列
    if n<=1:
        return n
    else:
        return(fib2(n-1)+fib2(n-2))
